Bitcoin ETF Flows Shift as $73M Buyer Enters the Market

• SigFig Wealth Management clients added an estimated $73 million to Bitcoin ETFs in Q3, with further institutional disclosures due by November 16.
• Alex Thorn expects about 97% of institutional holdings filings by November 16, offering insight into Bitcoin ETF positions as of September 30.
• U.S. spot Bitcoin ETFs gained $110 million on October 26, led by IBIT, while Ethereum ETFs recorded $88.58 million in net outflows.

Bitcoin ETFs recorded $110 million in net inflows on October 26, while Ethereum funds lost $88.58 million. Meanwhile, Galaxy Head of Firmwide Research Alex Thorn reported that SigFig Wealth Management clients added $73 million to Bitcoin ETFs during Q3. The figures emerge as investors await more institutional holdings disclosures ahead of the November 16 filing deadline.

SigFig Adds $73 Million as Bitcoin ETF Filings Continue

According to Alex Thorn, SigFig Wealth Management is a new filer whose clients increased Bitcoin ETF holdings by $73 million during Q3. The advisor manages approximately $2.8 billion to $3.6 billion in regulatory assets under management.

Thorn estimated the purchase represents 2% to 2.6% of SigFig's total assets. Across roughly 100,000 discretionary accounts averaging $34,000, he suggested the addition might reflect a model-portfolio decision. However, he stressed that the figures are estimates and his explanation remains speculative.

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Thorn also noted that many large asset managers and registered investment advisers file close to the November 16 deadline. He expects approximately 97% of filings by the end of that day. The disclosures will reveal Bitcoin ETF holdings as of September 30, 2026.

Institutional Holdings Face Comparison With Q2 Trends

In his report, Why Now Is the Time to Add and Hold BTC, Thorn said faster-moving investors reduced exposure during Q2. Meanwhile, sovereign investors and wealth managers increased their holdings.

He expects that pattern may continue into Q3, although upcoming filings will provide further evidence. SigFig's clients have exposure through retail accounts at institutions including Wells Fargo, Citizens, Santander and UBS.

Separately, analyst Crypto Patel highlighted changing Bitcoin ETF flows. Spot funds attracted $6.2 billion across August and September following $4.5 billion in June outflows. However, October had recorded $203 million in net outflows at the time of his post.

Bitcoin Funds Gain While Ethereum ETFs Lose $88.6 Million

According to SoSoValue, U.S. spot Bitcoin ETFs attracted $110 million on October 26. BlackRock's IBIT accounted for the entire net inflow, lifting its cumulative net inflows to $66.24 billion.

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In contrast, spot Ethereum ETFs recorded $88.58 million in net outflows. Fidelity's FETH nevertheless attracted $16.13 million in individual fund inflows. BlackRock remains the world's largest asset manager, while Fidelity ranks among the largest U.S. investment firms.

Crypto Patel raised the Federal Reserve's rate decision as another factor for investors watching Bitcoin ETF flows.